Kodak and Fuji papers are consistent from batch to batch and so is the film if processed properly. I have printed films that are nearly 60 years old on several recent paper batches and used the same filter pack as modern films and older papers (within about 10R).

Starting here: 50R and 12" af f11 from a 35mm negative to an 8x10 will give me a close center point, but this will vary from enlarger to enlarger. Once established use that pack and exposure as your personal starting point.

PE